我想在VirtualBox中kivy上使用Python 3 Ubuntu 16.04。
但是，当我尝试使用Python 3:
from kivy.app import App
from kivy.uix.label import Label
class TestApp(App):
def build(self):
return Label(text="hello kivy")
TestApp().run()
我收到以下错误。
$ python3 test.py
[INFO ] [Logger ] Record log in /home/openstack/.kivy/logs/kivy_16-10-08_7.txt
[INFO ] [Kivy ] v1.9.0
[INFO ] [Python ] v3.5.2 (default, Sep 10 2016, 08:21:44)
[GCC 5.4.0 20160609]
[INFO ] [Factory ] 173 symbols loaded
[INFO ] [Image ] Providers: img_tex, img_dds, img_gif, img_sdl2, img_pil (img_ffpyplayer ignored)
[INFO ] [Text ] Provider: sdl2
[INFO ] [OSC ] using <multiprocessing> for socket
[INFO ] [Window ] Provider: sdl2(['window_egl_rpi'] ignored)
[CRITICAL] [Window ] Unable to find any valuable Window provider at all!
egl_rpi - ImportError: cannot import name 'bcm'
File "/usr/lib/python3/dist-packages/kivy/core/__init__.py", line 57, in core_select_lib
fromlist=[modulename], level=0)
File "/usr/lib/python3/dist-packages/kivy/core/window/window_egl_rpi.py", line 12, in <module>
from kivy.lib.vidcore_lite import bcm, egl
sdl2 - TypeError: expected bytes, str found
File "/usr/lib/python3/dist-packages/kivy/core/__init__.py", line 65, in core_select_lib
cls = cls()
File "/usr/lib/python3/dist-packages/kivy/core/window/window_sdl2.py", line 121, in __init__
super(WindowSDL, self).__init__()
File "/usr/lib/python3/dist-packages/kivy/core/window/__init__.py", line 616, in __init__
self.create_window()
File "/usr/lib/python3/dist-packages/kivy/core/window/window_sdl2.py", line 171, in create_window
self.fullscreen, resizable, state)
File "kivy/core/window/_window_sdl2.pyx", line 60, in kivy.core.window._window_sdl2._WindowSDL2Storage.setup_window (kivy/core/window/_window_sdl2.c:1447)
x11 - ImportError: No module named 'kivy.core.window.window_x11'
File "/usr/lib/python3/dist-packages/kivy/core/__init__.py", line 57, in core_select_lib
fromlist=[modulename], level=0)
[CRITICAL] [App ] Unable to get a Window, abort.
Exception ignored in: 'kivy.properties.dpi2px'
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/kivy/utils.py", line 360, in __get__
retval = self.func(inst)
File "/usr/lib/python3/dist-packages/kivy/metrics.py", line 169, in dpi
EventLoop.ensure_window()
File "/usr/lib/python3/dist-packages/kivy/base.py", line 126, in ensure_window
sys.exit(1)
SystemExit: 1
[CRITICAL] [App ] Unable to get a Window, abort.
虽然在Python 2:
$ python test.py
[INFO ] [Logger ] Record log in /home/openstack/.kivy/logs/kivy_16-10-08_11.txt
[INFO ] [Kivy ] v1.9.0
[INFO ] [Python ] v2.7.12 (default, Jul 1 2016, 15:12:24)
[GCC 5.4.0 20160609]
[INFO ] [Factory ] 173 symbols loaded
[INFO ] [Image ] Providers: img_tex, img_dds, img_gif, img_sdl2 (img_pil, img_ffpyplayer ignored)
[INFO ] [Text ] Provider: sdl2
[INFO ] [OSC ] using <multiprocessing> for socket
[INFO ] [Window ] Provider: sdl2(['window_egl_rpi'] ignored)
[INFO ] [GL ] OpenGL version <3.0 Mesa 11.2.0>
[INFO ] [GL ] OpenGL vendor <VMware, Inc.>
[INFO ] [GL ] OpenGL renderer <Gallium 0.4 on llvmpipe (LLVM 3.8, 256 bits)>
[INFO ] [GL ] OpenGL parsed version: 3, 0
[INFO ] [GL ] Shading version <1.30>
[INFO ] [GL ] Texture max size <8192>
[INFO ] [GL ] Texture max units <18>
[INFO ] [Window ] auto add sdl2 input provider
[INFO ] [Window ] virtual keyboard not allowed, single mode, not docked
[INFO ] [Base ] Start application main loop
[INFO ] [GL ] NPOT texture support is available
[INFO ] [Base ] Leaving application in progress...
BTW，成功安装了以下内容：
$ sudo apt-get install libsdl2-2.0-0 libsdl2-image-2.0-0 libsdl2-mixer-2.0-0 libsdl2-ttf-2.0-0
$ sudo apt-get install python3-pil
$ sudo apt-get install python-setuptools python-pygame python-opengl python-gst0.10 python-enchant gstreamer0.10-plugins-good python-dev build-essential libgl1-mesa-dev libgles2-mesa-dev python-pip libgstreamer1.0-dev